EP1224832B1 - Method for the dynamic allocation of resources in a digital radio communication system - Google Patents

Abstract

The invention relates to a method for the dynamic allocation of resources in a digital radio communication system, in particular, in a mobile radio system. According to said method, the resources are formed by a limited number of physical channels in a radio interface between subscriber stations and base radio stations and said resources are allocated to the subscriber stations by a resource manager. The method is characterised in that a transmission capacity which exceeds the respective current requirements is allocated in a non-exclusive manner to at least a number of subscriber stations.

Description

The invention relates to a method for dynamic allocation of resources in a digital radio communication system, in particular a mobile radio system, and such trained radio communication system.

1 shows an example of the logical architecture of the future universal telecommunications system UMTS (Universal Mobile Telecommunications System) shown without that the invention would be limited to this.

A connection is established via a so-called radio interface between at least one base station Node B and several Subscriber stations UE (User Equipment), in particular be mobile, but also stationary transmitting and receiving devices can and the bottom links of the radio communication system are manufactured. A base radio station Node B supplies a radio zone of up to several square kilometers, a so-called radio cell Z. Due to the spatial limitation The scarce carrier frequencies can be located in a radio zone to which the data is transmitted in a modulated manner Reuse distance at the same time without it mutual interference (intercell interference) occurs. For this purpose, several radio cells Z together form one Basic radio station controller RNC (Radio Network Controller) managed radio area RNS (Radio Network Subsystem). Several Radio areas RNS form a radio network (UTRAN = Universal Telecommunications Radio Access Network) through which the connection with the core network CN (Core Network) of the mobile communication system UMTS is manufactured and which among other things the access to the analog and digital landline PSTN, ISDN, in one special packet switching network, in particular an ATM (Asynchron Transfer Mode) and IP (Internet Protocol) network, or allowed in another mobile network.

To meet the needs of the total spectrum available to be able to use carrier frequencies better are synchronous Multiplex method based on a frequency, time and / or Spreading code selective multiple access for the distribution of the Transmission capacity of a channel on several connections introduced with FDMA (Frequency Division Multiple Access), TDMA (Time Division Multiple Access) and CDMA (Code Division Multiple Access). For this purpose, in consultation between the sender and recipient Inclusion of the base radio stations a fixed assignment from transmit and receive synchronous frequency bands, Time slots and / or codes used.

If in the following the term "channel" or "physical channel" is used, it becomes identical to the term "Resource" used, possibly over several physical channels each have a specific transmission rate via the radio interface.

A disadvantage of this multiplex method is that the transmission capacity such a circuit-switched connection is predetermined by the multiplex synchronization and even if no transmission capacity is currently required is not released for other subscriber stations can be.

The latter performs another basic process, the Packet switching. It is based on the sharing of the Transmission capacity of one physical channel through several different connections (Bearer). For this too the channel is divided on the time axis, but not in the foreground in fixed time slots, but in addressed data packets variable length. The data is transmitted in a time-variant manner which is why we also use an asynchronous multiplex method speaks. Each station can access the up to then at any time access unused transmission capacity and its data e.g. transmitted according to the stochastic access procedure ALOHA. In addition, the data rate of a connection can be very vary slightly continuously. The transmitter can control the data rate both thereby influence at what intervals he sends the data packets, as well as by their length.

Future mobile radio systems such as UMTS will be available to the participants a variety of different services with different Offer data rates. In addition to pure voice transmission are multimedia applications with the accompanying Service diversity make up a large part of the data volume. The network-side integration of packet switching is particularly promising here.

For bidirectional message transmission from (uplink) and to (downlink) a subscriber station in UMTS are both the TDD mode (TDD = time duplex), a combination of a broadband TDMA / FDMA system with a CDMA system, as well FDD mode (FDD = frequency duplex), a broadband CDMA, is provided. Broadband CDMA (W-CDMA) in particular promises one high flexibility and efficiency in terms of different Data rates and quality of service requirements (Quality of Service = QoS). This is done through the Code Division Multiple Access procedure (CDMA), in which each bearer achieves one different combination of short and long code sequences for the transmission of messages between the subscriber stations used. The recipient puts a single Bearer recovered by using the received data stream with correlates the appropriate short and long code sequences.

This access method represents a very flexible allocation of resources available as there are bearers with different Peak values for the data rate and bearers with variable Data rates supported. On the other hand, this requires flexibility strict control of access to a channel, to avoid overloading and a predefined transmission quality to secure. These goals come with a 2 step strategy for the allocation of the bandwidth reached:

When establishing a connection there are certain transmission resources for each bearer depending on its bandwidth and the QoS requirements. This is done with an admission Control Function (connection acceptance function) reached, which is a reasonable number of code and interference resources reserved when establishing a connection and a so-called Transport format set TFCS (Transport Format Combination Set), including essentially a list all possible data rates used by the bearer can, and their coding for radio transmission too understand is. This function represents a long-term allocation of the requested transmission resources and can have a so-called statistical multiplex advantage, by the mutual balancing of the bit rate requirements of Bearers with variable data rates arise, take into account.

A short-term allocation of resources, however, is the so-called MAC (Media Access Control) controlled. The MAC is according to the ISO-OSI layer model, which for an extensive Standardization of communication systems was created assigned to layer 2 and is for use of the different traffic channels TCH (Transport Channels) responsible. The MAC chooses a specific transport format (TF), essentially a certain data rate for the transmission, from the list of transport formats used by Connection establishment were defined, whereby for a fair or prioritized allocation of the available bandwidth depending on from the current requirements of different Bearer packet scheduling algorithms provide.

However, there are limit states that affect the capacity act on a radio cell. The maximum transmission capacity is reached in a radio cell if either there are no vacant ones Resources are more available (so-called hard blocking) or else if in the case of incompletely orthogonal systems in the Practice is difficult to achieve the overall interference of the Signals, in particular caused by a mutual Influencing neighboring cells, a certain threshold exceeds (so-called soft blocking).

To especially with TDMA-based systems, in which in general Hard blocking limits transmission capacity the available resources as optimally as possible should use the resources between the subscriber stations can be switched dynamically, depending on the temporary Capacity requirements of all services of the individual Subscriber stations. To do this, the available resources and their assignment to certain bearers to get managed.

Because of the introduction of fast packet-oriented core networks (ATM or IP based) is expected in the future the strict distinction between real-time services and none Real-time services (real-time and non-real-time service) canceled and the services are only in their QoS parameters (essentially bit error rate, delay times, Jitter), the requirement arises that a third party cellular radio communication system Generation a uniform transmission mechanism must offer for all services that can be flexibly parameterized is.

To do this, the switching of resources should be dynamic changing data rates very quickly after each TDMA frame or after each transferred data block, in which the to transmitted data are divided on the transmitter side can to avoid unused resources and thereby the maximize spectral efficiency. In the system architecture UTRAN (UMTS Terrestrial Radio Access Network) for example it must be possible to switch every approx. 10 ms, whatever the length of a TDMA frame and thus 16 time slots (UTRA TDD multiple access).

So far, the problem has been circumvented by the possible dynamics is deliberately restricted in the allocation of resources. To each bearer from the base station control RNC dedicated channels (DCH = DCH), that means exclusively assigned, as for the transmission of the peak value the data rate of real-time services is.

Due to the high dynamic requirements, the occupancy of resources are controlled by the MAC (Layer 2). Layer 2 concerns the data link layer in the OSI reference model and is specialized in the beginning and end of data blocks delimit and and them with the desired reliability to move from one end to the other end of a connection. The radio resource manager RRC (Radio Resource Control) on the network layer layer 3 according to the OSI reference model for communication between the base radio station controls RNC of a core network, however, is by no means able to change assignments on a data block basis or TDMA frame base.

In contrast to the FDD mode (W-CDMA), in which every connection a continuously occupied physical channel with very lower capacity can be assigned, among other things this solution is carrying the resource allocation information not accessible for TDD mode (TD-CDMA) because too little Resources are available, and these beyond each have a large transmission capacity. Therefore is a constant occupancy for TDD and burst-shaped data traffic a resource for connections with discontinuous Data volume disadvantageous in order to avoid hard blocking associated with a limitation in efficiency.

In radio communication systems these are by any Multiple access methods defined physical channels to provide a variety of functions on the radio interface (e.g. signaling, broadcast from general System information, synchronization, resource allocation, Paging, data transmission) into a number of logical channels assigned. User data (e.g. voice, fax, video) are stored in the general about traffic channels (TCH) and Control signals generally via signaling channels (Control Channels CCH) broadcast.

According to the well-known TDD system architecture, the downlink to Signaling a resource allocation of the signaling channel FACH (Forward Link Access Channel), a CCH (Common Channel) used while signaling in the uplink a resource request in the RACH signaling channel (Random Access Channel), also a CCH.

Both FACH and RACH require a high transmission capacity, because the resource allocation for all participants a radio cell that is not always a dedicated physical Channel is assigned, must be handled. Self if it is assumed that their capacity depends on the Total load in the cell scales and the signaling over it in the downlink via the unidirectional logical control channel BCH (broadcast channel) takes place constantly resources be reserved for this purpose because of this adjustment can only be done semi-statically.

Another disadvantage is that on the FACH no transmission power control is possible and consequently at locations of the subscriber stations near the Radio cell boundaries generate a high intercell interference power becomes.

Furthermore, due to the high signaling load, the RACH not additionally used for packet transfers. This means that even with very small data packets that are in the Uplink to be transmitted, a high signaling overhead cannot be avoided. Also is the fixed allocation of RACH and FACH in particular in specific time slots susceptible to interference from neighboring cells, in particular in the case of uncoordinated networks.

Furthermore, the current signaling concept allows with RACH and FACH no flexible transmission of any Combinations of services using the TFCI (Transport Format Combination Indicator), just the assignment certain resources for a given period of time, a fixed data format is assumed.

Last but not least, due to the out-of-band signaling a CCH every subscriber station that is not continuously occupied dedicated channel is assigned at the same time both the signaling channel FACH as well as the temporarily assigned Traffic channel TCH received, which resulted in an increased Complexity and high energy consumption of the subscriber station effect.

The invention is therefore based on the task of radio resource management in a radio communication system to improve the disadvantages listed above be avoided. In particular, through a more flexible dynamic Allocation of resources to the system as a whole Available frequencies per unit of time managed more effectively become. This task is accomplished through a process with the Features of claim 1 and a radio communication system solved with the features of claim 21. Advantageous further training can be found in the subclaims.

The method according to the invention is described on the basis of the UMTS mobile radio system, for example, as follows realized. This is an over-allotment of physical Channels allowed, in TDD mode (TD-CDMA) from UMTS or a comparable radio communication system Time slots and / or codes. This will on the one hand Quasi-static allocation of resources by the radio resource manager RRC uniform for all channels of the network carried out, but on the other hand the dedicated medium access Control (MAC-d) instances by interacting with each other given the possibility of very fast transmission capacity exchange between several subscriber stations. The MAC-d instances are for subscriber-specific administration the resources of the services on the DCH of a subscriber station responsible, whereby according to the previous designs a direct interaction between different MAC-d instances is not provided.

In a further embodiment of the invention, it is proposed that the previous out-of-band signaling using RACH and FACH through inband signaling within certain dedicated DPCH (Dedicated Physical Channels) to replace. This increases flexibility and decreases both the interference generated and the susceptibility versus interference from neighboring cells (Inter Cell Interference). Furthermore, the requirements decrease the subscriber stations by using this for packet transmission just watch a downlink time slot (TDD) have to.

In addition, the previous TFCI concept according to the invention expanded in that by a clear assignment certain TFCI values for certain subscriber stations an additional subscriber station identifier is inserted. This can significantly reduce the signaling effort, but also be kept very flexible at the same time.

According to the invention, each subscriber station is in the uplink and in the downlink depending on the respective maximum Total data rate, the delay requirements, the average data rates and the interference situation, a certain number assigned by DPCH. The key here is that the Reservation of resources does not have to be exclusive, but instead each resource from the radio resource manager RRC at the same time can be assigned to several subscriber stations. Because of this "overloading" of physical channels with variable data rates, the possibility of a resource fast in the MAC layer (MAC-d) on a data block basis or TDMA frame basis to switch between several subscriber stations, without the relatively time-consuming change of assignment of the resources in the radio resource manager RRC have to. The total available transmission capacity for a subscriber station via all assigned resources generally exceeds the required transmission rate clearly to give the MAC layer a sufficiently large decision space available when occupying resources to deliver.

Basically, data transmission can take place both in the downlink as well as in the uplink for a subscriber station only in those Resources are made available to the subscriber station by the radio resource manager RRC have been assigned.

When allocating resources in the radio resource manager In a further form, RRC are measurements of the respective Subscriber station (in the downlink) and the base radio station (in Uplink) evaluated. Based on the measurement results, everyone receives available resource a particular index that sets in what order and what service in case of multiple CCTrCH (Coded Composite Transport Channel) the resources should be occupied. The measurements are taken during the Connection repeated regularly, so that if necessary in the radio resource manager RRC the re-award of the indices in time and, if necessary, reallocation of certain resources can be done.

In a further embodiment, each subscriber station is precise one of the resources assigned to it as a signaling resource Are defined. This signaling resource receives in each TDMA frame in addition to the data the TFCI in one format established when connecting, which is the reverse rate matching and the separation of data packets. The TFCI always refers to the whole Multiplex signal that contains all subscriber data and in is generally transferred across multiple resources.

A further embodiment provides that in the event that a signaling resource from several subscriber stations this resource is occupied by the TFCI for all subscriber stations carries, using a coding scheme for the TFCI with which all possible transport formats of the Subscriber stations are distinguished from each other. All In this case, subscriber stations of this resource read in each data block transmitted in a TDMA frame TFCI value and recognize from the value whether in the current data block Data for them to be transferred.

In the event that a subscriber station at least one of her has an exclusively assigned resource, i.e. a resource, which is not "overloaded" carries in a wider form one of these resources the TFCI of this subscriber station analogous to the previous TFCI signaling within a DPCH.

In the event that the available resources of a subscriber station distributed over several time slots, it is Particularly advantageous in the downlink, the TFCI in the temporal first time slot of a data block, above all unnecessary buffering of data in the subscriber station to avoid.

In cases where one TFCI-bearing resource is for several Subscriber stations is valid in a further embodiment the transmission power of the TFCI is set accordingly, a distinction between downlink and uplink is necessary is.

To this end, in continuation of the inventive concept in the downlink for the TFCI (and the midamble of the data packets) the performance chosen so that the most distant subscriber station of this resource can be achieved. Let it go to avoid unnecessary interference when pooling the Subscriber stations on common signaling resources combine such subscriber stations in a further embodiment, that require approximately the same transmission power. In contrast to the TFCI is the data part of the signaling resource and is only ever directed to a subscriber station therefore only sent with a power sufficient to to reach the corresponding subscriber station.

There is no special regulation regarding the transmission power in the uplink necessary because no broadcasting (point-to-multipoint transmission) the TFCI information is required and therefore also in resources that are temporary for certain TDMA frame periods be assigned to different subscriber stations, so-called shared resources, each subscriber station an individual one Transmission power taking channel attenuation into account chooses.

The confirmation of data transfers takes place further Design through messages between the higher layers, which correspond to the generic multiplex concept the subscriber data defined as separate traffic channels become. To exchange these confirmations, it is necessary each subscriber station at least one not exclusively assign used downlink and uplink resources, which then carries the TFCI.

While in the downlink the signaling of data transfers always occurs in certain resources so that the base radio station depending on the size and number of data packets and under Taking into account the priorities of those subscriber stations, whose data transfer takes place in the same resources can select a suitable transport format and the assigned one TFCI value transmitted, two for the uplink Alternatives suggested:

One embodiment is that in the uplink to shared Resources are accessed according to the ALOHA principle. each Subscriber station dials in depending on the data volume Transport format and transmits the assigned TFCI as well the corresponding data blocks in the assigned resources. By limiting the number of subscriber stations, who share certain resources can possible average data rate and the probability of Collisions are set. Priorities between subscriber stations can be taken into account in a further embodiment be that when assigning the subscriber stations priority classes are formed on the resources.

To optimize throughput in shared resources according to a further embodiment, the allocation of these resources be controlled centrally in the base radio station. To sends in every subscriber station that wants to transmit data special transport format and the associated TFCI. This Transport format is only used for the one that carries the TFCI Resource and contains only one signaling barer with a resource request. The base radio station checks this request and in turn sends a special transport format, also only with a signaling barer, in either the request is rejected or one or more of the subscriber station's non-TFCI carrying resources assigns it for a certain period of time. Corresponding The previous RACH-FACH concept can be continued the transfer within these temporarily occupied resources be signaled without a new ALOHA access he follows.

Fig. 1: Ein einleitend dargestelltes Funk-Kommunikationssystem,

Fig. 2: Das Wechselwirken von MAC und RRC bei der Zuteilung von Ressourcen in einem Funk-kommunikationssastem nach Fig. 1,

Fig. 3: Einen Vergleich zwischen der Ressourcenvergabe nach dem bekannten Stande der Technik und der Erfindung,

Fig. 4: Ein Beispiel für die Nutzung einer Tabelle zur Ressourcen-Zuteilung,

Fig. 5: Ein Beispiel für ein für Downlink-Übertragung mit Nutzung der Signalisierungs-Ressource durch drei UE.

Fig. 6: Ein Beispiel für eine Ressourcenaufteilung auf mehrere Teilnehmerstationen.

The invention will be explained in more detail using an exemplary embodiment. In the accompanying drawing shows

1: An introductory radio communication system,

2: the interaction of MAC and RRC in the allocation of resources in a radio communication system according to FIG. 1,

3: a comparison between the allocation of resources according to the known prior art and the invention,

4: An example of the use of a table for resource allocation,

Fig. 5: An example of a for downlink transmission using the signaling resource by three UE.

Fig. 6: An example of a resource allocation over several subscriber stations.

2 shows the interaction between the instance for resource distribution on Layer 2 (Layer L2), the MAC (Medium Access Control) and the radio resource manager at layer 3 (Layer L3), the RRC (Radio Resource Control) and this among themselves when assigning logical channels to physical PCH channels (layer L1). Layer 1 realizes the physical Bit transmission between the subscriber stations UE and the network (Node B) via the radio interface, this also includes control of the transmission power. An award of resources for the subscriber stations UE either directly from the one installed in the base radio station controller RNC Radio resource manager RRC or via the in the Base stations Node B installed MAC. The Mac is functional in a manner not shown additionally in a subscriber-specific instance MAC-d (dedicated Medium Access Control) and an instance MAC-sh (Shared MAC) divided. MAC-sh manages cell-specific resources, that temporarily differ for certain TDMA frame periods Participant stations can be assigned. In Fig. 3 is the essential with terms from set theory Difference in resource allocation in radio resource manager RRC between a system architecture according to the State of the art (Fig. 3a) and a system architecture according to the invention (Fig. 3b). 3a each subscriber station from the radio resource manager RRC certain number of resources assigned exclusively, shown through the disjunctive small circles that are defined by the MAC d are managed dynamically, that is, depending on the transmitting services and data volume with a certain Combination of data packets can be filled. If Services available due to variable data rate Temporarily do not need capacity, it is not possible Data from other subscriber stations in these resources transferred to. In addition, a so-called shared Range defined either by the MAC-sh or by a newer concept managed by the radio resource manager RRC becomes. There is a direct interaction between MAC-sh instances not planned so far.

With both concepts, this shared area only represents non-real-time services available and a uniform multiplex and signaling procedures for all services of one Participant station is not possible.

3b, according to the invention, each subscriber station a certain number of resources with a uniform Signaling procedure assigned by radio resource manager RRC. The larger, but now overlapping circles represents certain resources of multiple subscriber stations can be assigned at the same time, and therefore the The number of allocated resources increases. Within the Allocation space spanned by a circle can be inventively Temporary assignments are made by the MAC-d, whereby by appropriate coordination with other MAC-d entities that can access the same resources, multiple access is excluded.

Fig. 4 shows a base radio station controller RNC (Radio Network Controller), via which MAC-sh Connections to subscriber stations UE1, UE2, ... UEm established were. A subscriber-specific one is created for each subscriber station UE Instance MAC-d in the sense of an administrative process built up during the connection the radio resources for this subscriber station UE requests:

In the base radio station controller RNC for each of them managed cell Z1 ... Zn a table SCT (Shared Channel Table), each showing the current occupancy that stores cell resources. These tables SCT are in MAC-sh localized, but in this concept no external Interface to other layers served and therefore is not subject to standardization.

To allocate resources to a subscriber station UE1 ... UEm, the table SCT (Shared Channel Table) is accessed, the channels R1 ... Rmax available for the cells Z in a cell indicates which subscriber station UE1 .. UEm which resources R1 .. Rmax are currently assignable (all) and which are occupied (occ) are.

Each participant-specific MAC-d receives from its RLC instances (RLC = Radio Link Control) in every TTI (Transmission Time Interval) a certain number of data packets Transfer, documented in the table SCT responsible for him a corresponding resource R1 ... Rmax and routes the data packets together with the TFI (Transport Format Indicator) the physical layer (layer 1). The Mac-d shows only one resource at a time, as currently in UTRA TDD mode Soft Handover is not considered.

In the tables SCT, for each resource R1 ... Rmax determine which subscriber station UE1 ..UEm with what priority access the resource in question may. In this way, for example, subscriber stations UE in Real time with subscriber stations UE in non-real time or also several subscriber stations UE in non-real time the same resources are mapped. For conflicts in the Avoiding resource allocation must be ensured that each resource only from a real time subscriber station at most UE is assignable. In the event that one Subscriber station UE several CCTrCHs (Coded Composite Transport Channels) are assigned, this is in Fig. 4 for MAC-d the user station UE2 indicated, can also these channels CCTrCH1, CCTRCH2 assigned a different priority become. In addition, a collaboration feature of tables SCT for Z1 ... SCT for Zn, which it does by matching tables between neighboring cells allows to reduce intercell interference.

Fig. 5 shows an example of a TFCS (Transport Format Combination Set) in the downlink in the event that a signaling resource, the TFCI (Transport Format Combination Indicator) transmits, used by three subscriber stations UE1 .. UE3 becomes. Each subscriber station has a specific range of values of the TFCI. The subscriber station UE1 is the value range 2-4, the subscriber station UE2 the value range 5-8 and the subscriber station UE3 the range of values 9-10 assigned. The value 0 is sent if there is no data be transmitted. When establishing a connection (Bearer1 ..Bearer4) are all for a particular subscriber station UE relevant lines of this table of the subscriber station UE communicated to enable decoding of the TFCI. In The last column TS / Code specifies which resources (Time slot TS, code sequence code) are each occupied. in the In the example shown, all resources are in the time slot TS1, and all subscriber stations UE are the code sequences 1-3 assigned, accessed depending on the total data rate The signaling resource shared by all UEs lies in the resource (1/1), i.e. in time slot 1 and on the code sequence 1. The additional resources (1/2) and (1/3) are added as the overall data rate increases: A single resource is sufficient for around 160 bits; in addition, two or three resource units are required.

6 shows an example of how resources are to several subscriber stations UE1 ... UE5 in the uplink and Distribute in the downlink to the 16 time slots of a TDMA frame to let.

The subscriber station UE1 can use 4 resources in the uplink Have time slot TS1, 2 of which are connected to the subscriber station UE2 can be shared. While for the subscriber station UE1 the TFCI with the code sequence code 7 is transmitted for the subscriber station UE2, the code sequence code 5 in the time slot TS2 provided. This allows both subscriber stations UE1 and UE2 independently of each other on 2 time slots Access TS1, TS2 and two other resources between the two subscriber stations UE1, UE2 can be "shared" become. The downlink was for both subscriber stations UE1, UE2 defines a larger coverage area. Moreover a common signaling resource (code sequence Code 4 in timeslot TS16) provided as accepted should be that only non-real-time data is transmitted should. The subscriber stations UE3 and UE4 use in the downlink and uplink only one common resource each while the UE5 subscriber station exclusively on exclusive access resources reserved for them.

With the proposed method, any subscriber station depending on your data volume from the radio resource manager RRC specific assignments are made to maximize overall throughput at high cell load. On the other hand it’s still possible for very low traffic, within a cell or for the first TDD releases Always make reservations exclusively.

Claims (21)

1. Method for the dynamic allocation of resources in a digital radio communications system, where the resources are formed by a limited number of physical channels (PCH) on a radio interface between subscriber stations (UE) and base radio stations (Node B) and are allocated to the subscriber stations (UE) by a resource manager,
   characterized in that the resource manager nonexclusively allocates at least a number of subscriber stations (UE) a transmission capacity which exceeds a respective current demand.
2. Method according to Claim 1,
   characterized in that entities in a lower layer (MAC-LAYER) of the resource manager ascertain the current demand for physical channels (PCH) by the managed subscriber stations (UE) interactively with one another and temporarily allocate the transmission capacity made available to the subscriber stations (UE) nonexclusively by a higher layer (RRC-LAYER) of the resource manager to the subscriber stations (UE) on the basis of individual subscriber.
3. Method according to Claim 1 and 2,
   characterized in that the resource manager (RRC-Layer) makes a particular number of nonexclusively allocated physical channels (DPCH) to (uplink) and from (downlink) the base radio station (Node B) available to the subscriber stations (UE) and can temporarily allocate said number of physical channels on the basis of individual subscriber.
4. Method according to one of the preceding claims,
   characterized in that the physical channels (PCH) are separated on a frequency-selective, time-slot-selective and code-selective basis (TD-CDMA) according to a combined multiple access method and are used in time-division duplex mode (TDD), and the allocation of physical channels (PCH) is based on an allocation of time slots (TS) and codes.
5. Method according to Claim 4,
   characterized in that the use of the physical channels is aligned dynamically from TDMA frame to TDMA frame.
6. Method according to one of the preceding claims,
   characterized in that the number of nonexclusively allocated physical channels (DPCH) is allocated to the subscriber stations (UE) by the resource manager on the basis of a respective maximum total data rate, a mean data rate, a maximum delay time and/or an interference situation.
7. Method according to one of the preceding claims,
   characterized in that the allocation of resources in the resource manager involves the evaluation of regularly repeated measurements for the respective subscriber station (UE) and/or for the base radio station (Node B), and, on the basis of the measurement results, each available resource is allocated an index which defines an order and/or a service for the resource.
8. Method according to one of the preceding claims,
   characterized in that particular dedicated physical channels (DPCH) are used for signalling a resource request in the uplink and for signalling a resource allocation in the downlink.
9. Method according to Claim 8, characterized in that at least one signalling resource is defined for each subscriber station (UE) within the allocated physical channels (DPCH).
10. Method according to Claim 9,
    characterized in that, in each data block to be transmitted which comprises data associated with one or more subscriber stations (UE), the signalling resource additionally contains a transport format indicator (TFCI) in a format which is stipulated precisely upon connection setup.
11. Method according to Claim 10,
    characterized in that the transport format indicator (TFCI) is arranged in the respective time slot (TS) which is first in time in a data block associated with one or more subscriber stations (UE) in a TDMA frame.
12. Method according to one of Claims 9 to 11,
    characterized in that precisely one nonexclusive signalling resource is defined for each subscriber station (UE).
13. Method according to one of Claims 9 to 12,
    characterized in that a resource table (SCT) is started and the signalling resource can be allocated to a plurality of subscriber stations (UE).
14. Method according to one of Claims 10 to 13,
    characterized in that a transmitted power for the transport format indicator (TFCI) in the downlink is regulated on the basis of the respectively most distant subscriber station (UE).
15. Method according to Claim 13 or 14,
    characterized in that, for joint use of a signalling resource, subscriber stations (UE) having approximately the same transmission characteristics are put together.
16. Method according to Claim 13,
    characterized in that, if the signalling resource is used by a plurality of subscriber stations (UE) at the same time, a subscriber-specific identifier is provided in the transport format indicator (TFCI).
17. Method according to one of Claims 9 to 16,
    characterized in that a subscriber station (UE) is allocated at least one resource exclusively, and in at least one of the allocated resources the transport format indicator (TFCI) is transmitted within a dedicated physical channel (DPCH).
18. Method according to one of the preceding claims,
    characterized in that, in the uplink, the subscriber stations (UE) access jointly useable resources which are temporarily available to them on the basis of a stochastic random principle by selecting a transport format on the basis of a required transmission capacity and sending a corresponding transport format indicator (TFCI) together with the data blocks in the allocated resources.
19. Method according to Claim 18,
    characterized in that subscriber stations (UE) are allocated to the jointly useable resources on the basis of priority classes.
20. Method according to a preceding claim,
    characterized in that a subscriber station (UE) sends a resource request relating to a signalling resource in a specific transport format and in the transport format indicator (TFCI), and, following a check on its part, the base radio station (Node B) returns a specific transport format with a rejection or a temporary allocation of one or more of the non-TFCI-bearing resources of the subscriber station (UE).
21. Radio communications system, in particular a mobile radio system, for carrying out the method for the dynamic allocation of resources according to Claim 1.

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